From

Location

Message

Date Posted

Connecticut, USA

Has anyone seen anything on harpins? I stumbled across this today:

http://seattlepi.nwsource.com/nwgardens/127168_lovejoy19.html

7/10/2003 12:39:01 PM

Central Connecticut

Very interesting read...sounds like a magic elixer at a resonable price. Chris

7/10/2003 12:55:27 PM

Alex, IN

If this stuff works like it says I will have a monster next year because I found another organic fertalizer to use and it works wonders.

Well Good Luck,
Mikkal

7/10/2003 12:56:36 PM

Utah

so do you think it is a typo in the article where it
says
"Though the material is stable in the packet, unopened packets must be used within 24 hours."
maybe is should be opened instead of unopened ?


...maybe it's a just a placebo and only works because
with think it does ? :)

7/10/2003 1:55:47 PM

Tacoma, WA

And I am from the Pacific Northwest, yet I've never heard of the product. Mighty "spendy" if you ask me!

Stan

7/10/2003 2:32:00 PM

Utah

harpins are naturally occuring proteins that are produced by bateria and other microbes.
ref:
http://www.umassvegetable.org/soil_crop_pest_mgt/veg_management_%20pdfs/nevmg_biorational_pests.pdf

last pharagraph in the Microbial Pesticides mentions Harpins ...in Messenger and Actigard.

7/10/2003 2:55:09 PM

Utah

Harpins: Presumed helper proteins that are secreted by the TTSS in more abundance than true effectors, appear to interact with plant cell walls and membranes, are glycine-rich and devoid of cysteine, and possess a heat-stable ability to elicit the hypersensitive response when infiltrated into the intercellular (apoplastic) spaces of plant leaves.
ref:
http://pseudomonas-syringae.org/hrpdat.html

7/10/2003 2:59:57 PM

Utah

Messenger contains a new active ingredient, HarpinEa. It is based on naturally occurring proteins called "harpins" that are produced by bacteria and other microbes. More specifically, HarpinEa is chemically identical to the harpin produced naturally by Erwinia amylovora, the plant pathogenic bacterium that causes fire blight. Zhongmin Wei discovered the harpin protein while working in the laboratory of Steven V. Beer in the Department of Plant Pathology at Cornell University. Pathogenic bacteria need harpins to infect their host plants. In other plants, harpins bind to plant receptors which leads to stimulation of the plant's own pest suppression systems.
Ref:
http://www.cce.cornell.edu/washington/Ag/Articles/CCEWash_Messenger.html

7/10/2003 3:06:41 PM

Utah

insecticide, pesticide and growth stimulator all in one...
WOW !

7/10/2003 3:12:29 PM

Chesterfield, MO

This season I am actually experimenting with Messenger! So far so good I would say..time will tell. Like most other things, I've noticed that it CAN burn leaves so be careful when you apply it. If you're nice and suck up to the people who make Messenger you might just be able to get a free sample pack like me :) ..just explain to them what you would use it for and it might work. Good Luck

Steve G.

7/10/2003 4:52:56 PM

Utah

where do you go, who do you call, to get the free sample ?
email me privatly please ! HA! :) LOL !

7/10/2003 5:38:52 PM

Ctpumpkin@optonline.net

A couple years ago it was reported the The Scotts Co. would be handling this material for consumer use. Judging by the content of the article it looks like Scotts bailed.

We had at some point negotiated for the commercial Turf & Ornamental market. Don't know what became of that. This is the first I've heard of it since then so I'll ask around & see what else I can find out.

Steve
Steve

7/10/2003 6:15:33 PM

Connecticut, USA

It's like having a crack research staff at your fingertips...

Thanks.

7/10/2003 6:30:51 PM

Menomonie, WI (mail@gr8pumpkin.net)

Hey steve calm down your stuttering...lol

7/10/2003 7:58:45 PM

Deer Park WA

Grandpa always told me the secret to gardening is your shadow over it.

7/11/2003 1:07:14 AM

Ctpumpkin@optonline.net

Well it certainly isn't Scott's marketing it now. Not sure what happened to that deal or why just yet. Here's a link to the new owners:

http://www.edenbio.com/

In theory this material causes plants to behave much the same way vaccinatioins do in people.

It looks line Eden is selling dose packs for $5.00 each. This is supposed to make 3 gallons of spray that will treat 2-3,000 sq ft. More than a conventional chemical treatment for sure. But if it does all that it says is does, then it's a bargain at $220 per acre. If.....

Steve G., I hope you'll keep us posted on it's performance.

Steve J.

7/11/2003 10:10:49 PM

Chesterfield, MO

will keep you posted!...which reminds me it is time for another application :)

7/12/2003 12:27:06 AM

Chesterfield, MO

I just checked the website and saw their new Home and Garden section. When I received my free samples it was part of a test program for that so I am afraid it would be hard to get samples now. But the price seems pretty good

Good Luck
Steve G

7/12/2003 12:38:00 AM

Covington, WA

This was my secret weapon a couple years ago. Yeah, I was right on the leading edge with this one. One downside to it is that fruit seem to mature a little more quickly, and it is very expensive. It needs to be used quickly so it is cost prohibitive unless you can seal it up with an inert gas. The packages made a huge amount of spray material so it is best used for commercial crops. If they want to take advantage of the home garden market they need to produce it in smaller packages otherwise it is wasted. I let them know that a couple years ago but never recieved a reply from them. So now I learn here they are doing that? They could have let me know.

7/13/2003 7:57:34 PM

Ctpumpkin@optonline.net

It doesn't seem as though marhetting & communication are their strong points. Hopefully the product will stand on it's own merits.

Steve

7/13/2003 10:04:21 PM